Fireplace



Jan. 17, 1928. 3 f 1,656,326

E. H. JOHNSON FI REPLAG-E I I 3 Filed June 21. 1926 H I; I 11 3EdWarJJgJIOhH6OIL fltiorneyc Patented Jan. 17, 1928.

UNITEDVSTATYES' EDWARD H. JOH SON, or BISHOP, canmomwini FIREPLACE HApplication am June 21,

This invention relates to means for heating a room; and it comprises afire place that is especially adapted for use in cabins that arelocatedin remote places where it is (hillcult to obtain artisans sufficientlyskillful to erect fire places or to obtain building material such asbrick or stone 'ofwhich fire places are usually formedg and an object ofthis invention is toprovide azfirefplace that is made of light-welghtsheet metal and assembled at a factoryre dy t install ina building sothat it canbeshipp'ed or transported to any place and installed byrelatively unskilled labor. In other words when the fire place isfinished at the factory it is a lightweight spacious body that can beinstalled in a room-or building by any ordinary mechanic; \Vhilethisfire place is constructed especially for cabins suchas are commonlyerected in or near forest or forest reserves it is equally useful andcanbe in stalled in any building space, as at a camp; j

Another object of this invention is to provide a fire place that isadapted'to use a minimum' amount of fuel relative to the amount of heatthat itdisperses through a room. As is well known fireplaces constructedheretofore have been very extravagant in the use-of fuel, andhave beenarranged so that it has been possible to utilize only a small part ofthe "heat, most of the heatbeing permitted to pass up the chimney; and afurther object of this invent on is to provide meanslfor utilizing aIIIHQOI part of the heat instead ofwasting it. 1 Another object of thisinvention is to provide a fireplace constructed sothat air can pass intoitfr'omadjacent the floor line of a room and there heated and then bedischarged back into the room. To that end I provide a fire placehavinga combustion chamber and an air chamber surrounding it on the back,sides and top with air inlets adjacent the floor line of the room and adischarge outlet above the mantel connected to the fire place'so thatthe air in=the room is circulated as stated. i

Another objectis to provide means for preventing the heat from escapingrearwardly of the fire place sothata ma or portion of the heat will passinto the air circulating in the air chamber and be discharged into theroom. This is accomplished by providing an insulating chamber to thefireplace that is packed with asbestos; and this or used in an open maseriai at. 117,273. p

chamber notonly holds theheatfrom escaping rearwardly and to the sidesof the fire place, but also functions to prevent cold outside air frompassing throughthe walls of the fire place into theroom.

i A feature of the invention is shown in the constructiong andarrangement of parts in the fireplace fluein the base of which isarranged a spark arresting chamber that also functions to preventdown-drafts in the 1 chimney from passing through the fireplace into theroom. Y i 1 Other" features of invention are shown in the construction,combination and arrangementof parts whereby a fire place isproyided thatis easy to construct, assemble and install, that is strong,durable andeflicient ifn 1ise,and which also isadapted to conserve ue l V i Otherobjects, advantages and featuresof invention may appear from the accomanying drawings, the subjoined detaile description and the appendedclaims.

The accompanying drawings illustrate the invention.

Figure l is a front view of afire 'place constructed in accordance withthis invention; Fig. 2-is aside view; of the fire place showninFig. 1;Fig. 3 is an enlarged central verticalpsection on line 33, Fig. 1; andFig. 4 1s an enlarged cross section on 7 line 4+4, Fig. 1.

The fire place comprises afirelwall'ldthat has its bottom edge ll seatedin an elongated slot 12 that is formed in a front edge portion of-a baseplate 13 as best shown in 7 Figs. 3 and 4. The front edges 14 of thefire wall 10 are fittedandbrazed to the corners15 of a mantel support 16that has its center portion cut away to form the opening into the fireplace.

A ledge 17 of the support 16 at the top of the fire place opening isturned under to form a seat to which is bra'zed an edge portion of anangle iron 18 that in addition to forming a part of the top wall of thefire place also supports the front edge 19 of the flue-or chimney 20. ii

The fire wallllO in addition to being angled from its back wallforwardly and outwardly to form a large combustion chamber, as indicatedin Figs. 1 and 4, also has an upper portion of its back wall curved for-.wardftoward the angle iron- 18 to form a surface with which the firecancontact and be deflected forward toward the flue opening 21 that isbetween the upper edge 22 of the fire wall and the angle iron 18.

The flue adjacent the fire place is provided with a deflector plate 23that has its front edge 19 resting on and brazed to the angle iron 18;and this plate .is inclined up"- wardly and rearwardly across the flueopening 21 and also extends a considerable distance past the opening sothat as the flame passes from the fire place combustion chamber 24 itwill extend along the underside of the plate 23 so that the heat canpass through the plate into a hot air chamber 25. A large sparkarresting chamber 27 is provided in the flue 20 that will prevent sparksfrom escaping to t-he outer air; and also arrest considerable heat thatotherwise would cscape through the flue and permit it to pass throughthe walls thereof into the hot air chamber 25. Also the fire wall 10 onits back, sides and top, as well as the angle iron 18, are arranged sothat heat can pass through them into the air chamber Also the plate 23is inclined so that sparks from the fire will be deflected against thesurface 26of flue 20 and fall by gravity into the spark chamber 27 andnot pass out of the flue. This chamber is provided with a floor 28 thathas a curved portion 29 that rests on the upper curved portion of thewall 10; and this floor terminates in a short b'aflle plate30 that isspaced apart and arranged parallel with the plate 23.

The baffle plate 30 is provided to prevent downdrafts in the flue 20from passing through the fire place into a room. In other words a. downdraft in the flue will first enter the chamber 27 at the rear thereofand then travel along the floor 28 and be deflected against the baflleplate 30 and turn back up the flue. By this construction and arrangementof the walls of the spark chamber and the baflle plate 30 downdraftsthrough the fire place are practically avoided.

The sides, top and rear of the hot air chamber25 are enclosed" by aninsulating chamber 31 that is formed of pairs of rear walls 32, 33, sidewalls 34, 35, roof plates 36,

37, and mantel plates 38, 39 that are arranged in parallel pairsand-spaced apart, as best shown in Figs. 3, 4; and preferably the spacesbetween these pairs of walls are filled with a material 40, such asasbestos, that is a non-conductor of heat.

The walls 32, 33', 34. 35 have their bot:- tom edges secured to the baseplate 13 as indicated in Figs. 3, 4, and these walls support the roofplates 36, 37 which are inclined inwardly and upwardly to form a roofover the rearward portion of the fire place which when in use has itsrear portion extending outward through an opening; in the wall 41 of acabin room 42 as indicated in F ig. 3.

Anopening 43 is provided through the. plates 36, 37 for the fine 20 andthis open ing is near the center of the plates so that the flue canextend upward on the outside of the cabin parallel with and clear of thewall 41-.

Oppositely arranged air inlets 43 are proan extension 45 extendingupward from the mantel plate 39 and roof, plate 37. Preferably the fireplace is seated on a concrete base 46 as indicated in Fig. 3; however itcan be seated on any suitable base.

\Vith the parts thus constructed and arranged and the fire place inoperation, air will be circulated from the floor line of the roomthrough the inlets 43 into the air chamber 25 and then out through theopening 44 into the upper art of the room; and as the air is circulatethrough the air chamber it will be heated, and as previously stated alarge portion of the heat developed by combustion in the combustionchamber will pass into the air circulating through the hot air chamberto heat the room.

. Preferably all of the metal surface visible from positions within theroom are formed of sheet metalhaving a smooth surface that can betreated by painting or enamelingto give it a polished finish. This sheetmetal preferably is of the same thickness and qual-' ity as that used informing automobile bodies.

Also the mantel and support can be paneled as indicated in the drawingto add strength and an artistic finish to the structure.

It is understood that the edge portions of the sheet metal can bebrought together and secured in various ways well known in the artincluding brazing and riveting. Preferably the fire wall 10 is muchthicker than the other walls that are made of very light weightmaterial. I

Also it is understood that the fire place ca 11 be made in varioussizes,

I claim as my invention:

1. In a transportable fire place the combination of a base plate havinga slot therein, a fire wall having its lower end seated and brazed inthe slot of said base plate, said wall havingits upper end curvedforwardly, a mantel support brazed to said base plate and fire wall, amantel on said support an angle'ironadjacent the top: of said are wallthat secured to said support, aflue supported by said angleiro n andfirewall, other walls secured to said base plate and arranged to form anair chamber around said fire wall and the bottom end of said flue,radlators for introducing a1r into the bottom of the air chamber, and avertically arranged air out" let above said mantel.

2. In a transportable fire place the combination of a base plate havinga slot therein,

a fire wall having its lower end seated and brazed in theslot of saidbase plate, a mantel support secured to said base plate and fire wall, amantel secured to said support, an angleiron arranged adjacent the upperflue, a roof supported by said other walls, a

radiator through which air can pass into the bottom of the air chamber,and a vertically arranged air outlet above said mantel.

In witness whereof, I have hereunto aflixed my signature.

EDWARD H, JOHNSON.

